Does anyone know if there is a way to get BiaB to play at the same time as Amplitube?

I recently upgraded to Windows 7 from XP and now I can only have Amplitube OR BiaB working.

The whole idea of having these 2 programs is for them to work at the same time.

I can only get sound to come out of one or the other (depending which one was opened first).

Thanks in advance for any help regarding this.


Specs:
Creative X-fi with front bay audio panel
AMD Phenom II 555BE x2
4GB 1333 DDR3 ram
Windows 7 64 bit